From 7195aabf8f8b31ccff85969d26189170a7d6cb27 Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Fri, 28 Oct 2022 17:08:48 +0100
Subject: [PATCH] media: i2c: ov9282: Split registers into common and mode
 specific

Currently only one mode is supported, so all registers were
dropped in one list.
In preparation for adding more modes, split out the common registers
from those which configure the mode.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
---
 drivers/media/i2c/ov9282.c | 77 +++++++++++++++++++++++---------------
 1 file changed, 47 insertions(+), 30 deletions(-)

diff --git a/drivers/media/i2c/ov9282.c b/drivers/media/i2c/ov9282.c
index 0c604050b4e5..6999ce869a1b 100644
--- a/drivers/media/i2c/ov9282.c
+++ b/drivers/media/i2c/ov9282.c
@@ -147,8 +147,8 @@ static const s64 link_freq[] = {
 	OV9282_LINK_FREQ,
 };
 
-/* Sensor mode registers */
-static const struct ov9282_reg mode_1280x720_regs[] = {
+/* Common registers */
+static const struct ov9282_reg common_regs[] = {
 	{0x0302, 0x32},
 	{0x030d, 0x50},
 	{0x030e, 0x02},
@@ -179,13 +179,49 @@ static const struct ov9282_reg mode_1280x720_regs[] = {
 	{0x372d, 0x22},
 	{0x3731, 0x80},
 	{0x3732, 0x30},
-	{0x3778, 0x00},
 	{0x377d, 0x22},
 	{0x3788, 0x02},
 	{0x3789, 0xa4},
 	{0x378a, 0x00},
 	{0x378b, 0x4a},
 	{0x3799, 0x20},
+	{0x3881, 0x42},
+	{0x38a8, 0x02},
+	{0x38a9, 0x80},
+	{0x38b1, 0x00},
+	{0x38c4, 0x00},
+	{0x38c5, 0xc0},
+	{0x38c6, 0x04},
+	{0x38c7, 0x80},
+	{0x3920, 0xff},
+	{0x4010, 0x40},
+	{0x4043, 0x40},
+	{0x4307, 0x30},
+	{0x4317, 0x00},
+	{0x4501, 0x00},
+	{0x450a, 0x08},
+	{0x4601, 0x04},
+	{0x470f, 0x00},
+	{0x4f07, 0x00},
+	{0x4800, 0x20},
+	{0x5000, 0x9f},
+	{0x5001, 0x00},
+	{0x5e00, 0x00},
+	{0x5d00, 0x07},
+	{0x5d01, 0x00},
+	{0x0101, 0x01},
+	{0x1000, 0x03},
+	{0x5a08, 0x84},
+};
+
+struct ov9282_reg_list common_regs_list = {
+	.num_of_regs = ARRAY_SIZE(common_regs),
+	.regs = common_regs,
+};
+
+/* Sensor mode registers */
+static const struct ov9282_reg mode_1280x720_regs[] = {
+	{0x3778, 0x00},
 	{0x3800, 0x00},
 	{0x3801, 0x00},
 	{0x3802, 0x00},
@@ -208,40 +244,13 @@ static const struct ov9282_reg mode_1280x720_regs[] = {
 	{0x3815, 0x11},
 	{0x3820, 0x3c},
 	{0x3821, 0x84},
-	{0x3881, 0x42},
-	{0x38a8, 0x02},
-	{0x38a9, 0x80},
-	{0x38b1, 0x00},
-	{0x38c4, 0x00},
-	{0x38c5, 0xc0},
-	{0x38c6, 0x04},
-	{0x38c7, 0x80},
-	{0x3920, 0xff},
 	{0x4003, 0x40},
 	{0x4008, 0x02},
 	{0x4009, 0x05},
 	{0x400c, 0x00},
 	{0x400d, 0x03},
-	{0x4010, 0x40},
-	{0x4043, 0x40},
-	{0x4307, 0x30},
-	{0x4317, 0x00},
-	{0x4501, 0x00},
 	{0x4507, 0x00},
 	{0x4509, 0x80},
-	{0x450a, 0x08},
-	{0x4601, 0x04},
-	{0x470f, 0x00},
-	{0x4f07, 0x00},
-	{0x4800, 0x20},
-	{0x5000, 0x9f},
-	{0x5001, 0x00},
-	{0x5e00, 0x00},
-	{0x5d00, 0x07},
-	{0x5d01, 0x00},
-	{0x0101, 0x01},
-	{0x1000, 0x03},
-	{0x5a08, 0x84},
 };
 
 /* Supported sensor mode configurations */
@@ -653,6 +662,14 @@ static int ov9282_start_streaming(struct ov9282 *ov9282)
 	const struct ov9282_reg_list *reg_list;
 	int ret;
 
+	/* Write common registers */
+	ret = ov9282_write_regs(ov9282, common_regs_list.regs,
+				common_regs_list.num_of_regs);
+	if (ret) {
+		dev_err(ov9282->dev, "fail to write common registers");
+		return ret;
+	}
+
 	/* Write sensor mode registers */
 	reg_list = &ov9282->cur_mode->reg_list;
 	ret = ov9282_write_regs(ov9282, reg_list->regs, reg_list->num_of_regs);
-- 
2.20.1